/[pcre]/code/trunk/pcre_internal.h
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revision 240 by ph10, Tue Sep 11 15:47:20 2007 UTC revision 708 by ph10, Fri Sep 23 11:03:03 2011 UTC
# Line 7  Line 7 
7  and semantics are as close as possible to those of the Perl 5 language.  and semantics are as close as possible to those of the Perl 5 language.
8    
9                         Written by Philip Hazel                         Written by Philip Hazel
10             Copyright (c) 1997-2007 University of Cambridge             Copyright (c) 1997-2011 University of Cambridge
11    
12  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
13  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
# Line 45  functions whose names all begin with "_p Line 45  functions whose names all begin with "_p
45  #ifndef PCRE_INTERNAL_H  #ifndef PCRE_INTERNAL_H
46  #define PCRE_INTERNAL_H  #define PCRE_INTERNAL_H
47    
48  /* Define DEBUG to get debugging output on stdout. */  /* Define PCRE_DEBUG to get debugging output on stdout. */
49    
50  #if 0  #if 0
51  #define DEBUG  #define PCRE_DEBUG
52    #endif
53    
54    /* We do not support both EBCDIC and UTF-8 at the same time. The "configure"
55    script prevents both being selected, but not everybody uses "configure". */
56    
57    #if defined EBCDIC && defined SUPPORT_UTF8
58    #error The use of both EBCDIC and SUPPORT_UTF8 is not supported.
59    #endif
60    
61    /* If SUPPORT_UCP is defined, SUPPORT_UTF8 must also be defined. The
62    "configure" script ensures this, but not everybody uses "configure". */
63    
64    #if defined SUPPORT_UCP && !defined SUPPORT_UTF8
65    #define SUPPORT_UTF8 1
66  #endif  #endif
67    
68  /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef  /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
# Line 60  It turns out that the Mac Debugging.h he Line 74  It turns out that the Mac Debugging.h he
74  be absolutely sure we get our version. */  be absolutely sure we get our version. */
75    
76  #undef DPRINTF  #undef DPRINTF
77  #ifdef DEBUG  #ifdef PCRE_DEBUG
78  #define DPRINTF(p) printf p  #define DPRINTF(p) printf p
79  #else  #else
80  #define DPRINTF(p) /* Nothing */  #define DPRINTF(p) /* Nothing */
# Line 72  setjmp and stdarg are used is when NO_RE Line 86  setjmp and stdarg are used is when NO_RE
86    
87  #include <ctype.h>  #include <ctype.h>
88  #include <limits.h>  #include <limits.h>
 #include <setjmp.h>  
 #include <stdarg.h>  
89  #include <stddef.h>  #include <stddef.h>
90  #include <stdio.h>  #include <stdio.h>
91  #include <stdlib.h>  #include <stdlib.h>
# Line 132  PCRE_EXP_DATA_DEFN only if they are not Line 144  PCRE_EXP_DATA_DEFN only if they are not
144  #  endif  #  endif
145  #endif  #endif
146    
147    /* When compiling with the MSVC compiler, it is sometimes necessary to include
148    a "calling convention" before exported function names. (This is secondhand
149    information; I know nothing about MSVC myself). For example, something like
150    
151      void __cdecl function(....)
152    
153    might be needed. In order so make this easy, all the exported functions have
154    PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
155    set, we ensure here that it has no effect. */
156    
157    #ifndef PCRE_CALL_CONVENTION
158    #define PCRE_CALL_CONVENTION
159    #endif
160    
161  /* We need to have types that specify unsigned 16-bit and 32-bit integers. We  /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
162  cannot determine these outside the compilation (e.g. by running a program as  cannot determine these outside the compilation (e.g. by running a program as
163  part of "configure") because PCRE is often cross-compiled for use on other  part of "configure") because PCRE is often cross-compiled for use on other
# Line 140  preprocessor time in standard C environm Line 166  preprocessor time in standard C environm
166    
167  #if USHRT_MAX == 65535  #if USHRT_MAX == 65535
168    typedef unsigned short pcre_uint16;    typedef unsigned short pcre_uint16;
169      typedef short pcre_int16;
170  #elif UINT_MAX == 65535  #elif UINT_MAX == 65535
171    typedef unsigned int pcre_uint16;    typedef unsigned int pcre_uint16;
172      typedef int pcre_int16;
173  #else  #else
174    #error Cannot determine a type for 16-bit unsigned integers    #error Cannot determine a type for 16-bit unsigned integers
175  #endif  #endif
176    
177  #if UINT_MAX == 4294967295  #if UINT_MAX == 4294967295
178    typedef unsigned int pcre_uint32;    typedef unsigned int pcre_uint32;
179      typedef int pcre_int32;
180  #elif ULONG_MAX == 4294967295  #elif ULONG_MAX == 4294967295
181    typedef unsigned long int pcre_uint32;    typedef unsigned long int pcre_uint32;
182      typedef long int pcre_int32;
183  #else  #else
184    #error Cannot determine a type for 32-bit unsigned integers    #error Cannot determine a type for 32-bit unsigned integers
185  #endif  #endif
186    
187    /* When checking for integer overflow in pcre_compile(), we need to handle
188    large integers. If a 64-bit integer type is available, we can use that.
189    Otherwise we have to cast to double, which of course requires floating point
190    arithmetic. Handle this by defining a macro for the appropriate type. If
191    stdint.h is available, include it; it may define INT64_MAX. Systems that do not
192    have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
193    by "configure". */
194    
195    #if HAVE_STDINT_H
196    #include <stdint.h>
197    #elif HAVE_INTTYPES_H
198    #include <inttypes.h>
199    #endif
200    
201    #if defined INT64_MAX || defined int64_t
202    #define INT64_OR_DOUBLE int64_t
203    #else
204    #define INT64_OR_DOUBLE double
205    #endif
206    
207  /* All character handling must be done as unsigned characters. Otherwise there  /* All character handling must be done as unsigned characters. Otherwise there
208  are problems with top-bit-set characters and functions such as isspace().  are problems with top-bit-set characters and functions such as isspace().
209  However, we leave the interface to the outside world as char *, because that  However, we leave the interface to the outside world as char *, because that
# Line 358  capturing parenthesis numbers in back re Line 408  capturing parenthesis numbers in back re
408    
409  /* When UTF-8 encoding is being used, a character is no longer just a single  /* When UTF-8 encoding is being used, a character is no longer just a single
410  byte. The macros for character handling generate simple sequences when used in  byte. The macros for character handling generate simple sequences when used in
411  byte-mode, and more complicated ones for UTF-8 characters. BACKCHAR should  byte-mode, and more complicated ones for UTF-8 characters. GETCHARLENTEST is
412  never be called in byte mode. To make sure it can never even appear when UTF-8  not used when UTF-8 is not supported, so it is not defined, and BACKCHAR should
413  support is omitted, we don't even define it. */  never be called in byte mode. To make sure they can never even appear when
414    UTF-8 support is omitted, we don't even define them. */
415    
416  #ifndef SUPPORT_UTF8  #ifndef SUPPORT_UTF8
417  #define GETCHAR(c, eptr) c = *eptr;  #define GETCHAR(c, eptr) c = *eptr;
# Line 368  support is omitted, we don't even define Line 419  support is omitted, we don't even define
419  #define GETCHARINC(c, eptr) c = *eptr++;  #define GETCHARINC(c, eptr) c = *eptr++;
420  #define GETCHARINCTEST(c, eptr) c = *eptr++;  #define GETCHARINCTEST(c, eptr) c = *eptr++;
421  #define GETCHARLEN(c, eptr, len) c = *eptr;  #define GETCHARLEN(c, eptr, len) c = *eptr;
422    /* #define GETCHARLENTEST(c, eptr, len) */
423  /* #define BACKCHAR(eptr) */  /* #define BACKCHAR(eptr) */
424    
425  #else   /* SUPPORT_UTF8 */  #else   /* SUPPORT_UTF8 */
426    
427    /* These macros were originally written in the form of loops that used data
428    from the tables whose names start with _pcre_utf8_table. They were rewritten by
429    a user so as not to use loops, because in some environments this gives a
430    significant performance advantage, and it seems never to do any harm. */
431    
432    /* Base macro to pick up the remaining bytes of a UTF-8 character, not
433    advancing the pointer. */
434    
435    #define GETUTF8(c, eptr) \
436        { \
437        if ((c & 0x20) == 0) \
438          c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
439        else if ((c & 0x10) == 0) \
440          c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
441        else if ((c & 0x08) == 0) \
442          c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
443          ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
444        else if ((c & 0x04) == 0) \
445          c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
446              ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
447              (eptr[4] & 0x3f); \
448        else \
449          c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
450              ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
451              ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
452        }
453    
454  /* Get the next UTF-8 character, not advancing the pointer. This is called when  /* Get the next UTF-8 character, not advancing the pointer. This is called when
455  we know we are in UTF-8 mode. */  we know we are in UTF-8 mode. */
456    
457  #define GETCHAR(c, eptr) \  #define GETCHAR(c, eptr) \
458    c = *eptr; \    c = *eptr; \
459    if (c >= 0xc0) \    if (c >= 0xc0) GETUTF8(c, eptr);
     { \  
     int gcii; \  
     int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \  
     int gcss = 6*gcaa; \  
     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \  
     for (gcii = 1; gcii <= gcaa; gcii++) \  
       { \  
       gcss -= 6; \  
       c |= (eptr[gcii] & 0x3f) << gcss; \  
       } \  
     }  
460    
461  /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the  /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
462  pointer. */  pointer. */
463    
464  #define GETCHARTEST(c, eptr) \  #define GETCHARTEST(c, eptr) \
465    c = *eptr; \    c = *eptr; \
466    if (utf8 && c >= 0xc0) \    if (utf8 && c >= 0xc0) GETUTF8(c, eptr);
467    
468    /* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
469    the pointer. */
470    
471    #define GETUTF8INC(c, eptr) \
472      { \      { \
473      int gcii; \      if ((c & 0x20) == 0) \
474      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \        c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
475      int gcss = 6*gcaa; \      else if ((c & 0x10) == 0) \
     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \  
     for (gcii = 1; gcii <= gcaa; gcii++) \  
476        { \        { \
477        gcss -= 6; \        c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
478        c |= (eptr[gcii] & 0x3f) << gcss; \        eptr += 2; \
479          } \
480        else if ((c & 0x08) == 0) \
481          { \
482          c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
483              ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
484          eptr += 3; \
485          } \
486        else if ((c & 0x04) == 0) \
487          { \
488          c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
489              ((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
490              (eptr[3] & 0x3f); \
491          eptr += 4; \
492          } \
493        else \
494          { \
495          c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
496              ((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
497              ((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
498          eptr += 5; \
499        } \        } \
500      }      }
501    
# Line 413  know we are in UTF-8 mode. */ Line 504  know we are in UTF-8 mode. */
504    
505  #define GETCHARINC(c, eptr) \  #define GETCHARINC(c, eptr) \
506    c = *eptr++; \    c = *eptr++; \
507    if (c >= 0xc0) \    if (c >= 0xc0) GETUTF8INC(c, eptr);
     { \  
     int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \  
     int gcss = 6*gcaa; \  
     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \  
     while (gcaa-- > 0) \  
       { \  
       gcss -= 6; \  
       c |= (*eptr++ & 0x3f) << gcss; \  
       } \  
     }  
508    
509  /* Get the next character, testing for UTF-8 mode, and advancing the pointer */  /* Get the next character, testing for UTF-8 mode, and advancing the pointer.
510    This is called when we don't know if we are in UTF-8 mode. */
511    
512  #define GETCHARINCTEST(c, eptr) \  #define GETCHARINCTEST(c, eptr) \
513    c = *eptr++; \    c = *eptr++; \
514    if (utf8 && c >= 0xc0) \    if (utf8 && c >= 0xc0) GETUTF8INC(c, eptr);
515    
516    /* Base macro to pick up the remaining bytes of a UTF-8 character, not
517    advancing the pointer, incrementing the length. */
518    
519    #define GETUTF8LEN(c, eptr, len) \
520      { \      { \
521      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      if ((c & 0x20) == 0) \
522      int gcss = 6*gcaa; \        { \
523      c = (c & _pcre_utf8_table3[gcaa]) << gcss; \        c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
524      while (gcaa-- > 0) \        len++; \
525          } \
526        else if ((c & 0x10)  == 0) \
527        { \        { \
528        gcss -= 6; \        c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
529        c |= (*eptr++ & 0x3f) << gcss; \        len += 2; \
530          } \
531        else if ((c & 0x08)  == 0) \
532          {\
533          c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
534              ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
535          len += 3; \
536          } \
537        else if ((c & 0x04)  == 0) \
538          { \
539          c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
540              ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
541              (eptr[4] & 0x3f); \
542          len += 4; \
543          } \
544        else \
545          {\
546          c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
547              ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
548              ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
549          len += 5; \
550        } \        } \
551      }      }
552    
# Line 446  if there are extra bytes. This is called Line 555  if there are extra bytes. This is called
555    
556  #define GETCHARLEN(c, eptr, len) \  #define GETCHARLEN(c, eptr, len) \
557    c = *eptr; \    c = *eptr; \
558    if (c >= 0xc0) \    if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
559      { \  
560      int gcii; \  /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
561      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \  pointer, incrementing length if there are extra bytes. This is called when we
562      int gcss = 6*gcaa; \  do not know if we are in UTF-8 mode. */
563      c = (c & _pcre_utf8_table3[gcaa]) << gcss; \  
564      for (gcii = 1; gcii <= gcaa; gcii++) \  #define GETCHARLENTEST(c, eptr, len) \
565        { \    c = *eptr; \
566        gcss -= 6; \    if (utf8 && c >= 0xc0) GETUTF8LEN(c, eptr, len);
       c |= (eptr[gcii] & 0x3f) << gcss; \  
       } \  
     len += gcaa; \  
     }  
567    
568  /* If the pointer is not at the start of a character, move it back until  /* If the pointer is not at the start of a character, move it back until
569  it is. This is called only in UTF-8 mode - we don't put a test within the macro  it is. This is called only in UTF-8 mode - we don't put a test within the macro
# Line 466  because almost all calls are already wit Line 571  because almost all calls are already wit
571    
572  #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--  #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
573    
574  #endif  #endif  /* SUPPORT_UTF8 */
575    
576    
577  /* In case there is no definition of offsetof() provided - though any proper  /* In case there is no definition of offsetof() provided - though any proper
# Line 477  Standard C system should have one. */ Line 582  Standard C system should have one. */
582  #endif  #endif
583    
584    
 /* These are the public options that can change during matching. */  
   
 #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)  
   
585  /* Private flags containing information about the compiled regex. They used to  /* Private flags containing information about the compiled regex. They used to
586  live at the top end of the options word, but that got almost full, so now they  live at the top end of the options word, but that got almost full, so now they
587  are in a 16-bit flags word. */  are in a 16-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as
588    the restrictions on partial matching have been lifted. It remains for backwards
589    compatibility. */
590    
591  #define PCRE_NOPARTIAL     0x0001  /* can't use partial with this regex */  #define PCRE_NOPARTIAL     0x0001  /* can't use partial with this regex */
592  #define PCRE_FIRSTSET      0x0002  /* first_byte is set */  #define PCRE_FIRSTSET      0x0002  /* first_byte is set */
# Line 491  are in a 16-bit flags word. */ Line 594  are in a 16-bit flags word. */
594  #define PCRE_STARTLINE     0x0008  /* start after \n for multiline */  #define PCRE_STARTLINE     0x0008  /* start after \n for multiline */
595  #define PCRE_JCHANGED      0x0010  /* j option used in regex */  #define PCRE_JCHANGED      0x0010  /* j option used in regex */
596  #define PCRE_HASCRORLF     0x0020  /* explicit \r or \n in pattern */  #define PCRE_HASCRORLF     0x0020  /* explicit \r or \n in pattern */
597    #define PCRE_HASTHEN       0x0040  /* pattern contains (*THEN) */
598    
599  /* Options for the "extra" block produced by pcre_study(). */  /* Flags for the "extra" block produced by pcre_study(). */
600    
601  #define PCRE_STUDY_MAPPED   0x01     /* a map of starting chars exists */  #define PCRE_STUDY_MAPPED  0x0001  /* a map of starting chars exists */
602    #define PCRE_STUDY_MINLEN  0x0002  /* a minimum length field exists */
603    
604  /* Masks for identifying the public options that are permitted at compile  /* Masks for identifying the public options that are permitted at compile
605  time, run time, or study time, respectively. */  time, run time, or study time, respectively. */
# Line 502  time, run time, or study time, respectiv Line 607  time, run time, or study time, respectiv
607  #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \  #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
608                             PCRE_NEWLINE_ANYCRLF)                             PCRE_NEWLINE_ANYCRLF)
609    
610  #define PUBLIC_OPTIONS \  #define PUBLIC_COMPILE_OPTIONS \
611    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
612     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
613     PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \     PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
614     PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)     PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
615       PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE)
616    
617  #define PUBLIC_EXEC_OPTIONS \  #define PUBLIC_EXEC_OPTIONS \
618    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
619     PCRE_PARTIAL|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)     PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
620       PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
621    
622  #define PUBLIC_DFA_EXEC_OPTIONS \  #define PUBLIC_DFA_EXEC_OPTIONS \
623    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
624     PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS| \     PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
625     PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)     PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
626       PCRE_NO_START_OPTIMIZE)
627    
628  #define PUBLIC_STUDY_OPTIONS 0   /* None defined */  #define PUBLIC_STUDY_OPTIONS \
629       PCRE_STUDY_JIT_COMPILE
630    
631  /* Magic number to provide a small check against being handed junk. Also used  /* Magic number to provide a small check against being handed junk. Also used
632  to detect whether a pattern was compiled on a host of different endianness. */  to detect whether a pattern was compiled on a host of different endianness. */
# Line 540  variable-length repeat, or a anything ot Line 649  variable-length repeat, or a anything ot
649  #define REQ_CASELESS 0x0100    /* indicates caselessness */  #define REQ_CASELESS 0x0100    /* indicates caselessness */
650  #define REQ_VARY     0x0200    /* reqbyte followed non-literal item */  #define REQ_VARY     0x0200    /* reqbyte followed non-literal item */
651    
652  /* Miscellaneous definitions */  /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
653    environments where these macros are defined elsewhere. Unfortunately, there
654    is no way to do the same for the typedef. */
655    
656  typedef int BOOL;  typedef int BOOL;
657    
658    #ifndef FALSE
659  #define FALSE   0  #define FALSE   0
660  #define TRUE    1  #define TRUE    1
661    #endif
662    
663    /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
664    character constants like '*' because the compiler would emit their EBCDIC code,
665    which is different from their ASCII/UTF-8 code. Instead we define macros for
666    the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
667    is enabled. When UTF-8 support is not enabled, the definitions use character
668    literals. Both character and string versions of each character are needed, and
669    there are some longer strings as well.
670    
671    This means that, on EBCDIC platforms, the PCRE library can handle either
672    EBCDIC, or UTF-8, but not both. To support both in the same compiled library
673    would need different lookups depending on whether PCRE_UTF8 was set or not.
674    This would make it impossible to use characters in switch/case statements,
675    which would reduce performance. For a theoretical use (which nobody has asked
676    for) in a minority area (EBCDIC platforms), this is not sensible. Any
677    application that did need both could compile two versions of the library, using
678    macros to give the functions distinct names. */
679    
680    #ifndef SUPPORT_UTF8
681    
682    /* UTF-8 support is not enabled; use the platform-dependent character literals
683    so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
684    
685    #define CHAR_HT                     '\t'
686    #define CHAR_VT                     '\v'
687    #define CHAR_FF                     '\f'
688    #define CHAR_CR                     '\r'
689    #define CHAR_NL                     '\n'
690    #define CHAR_BS                     '\b'
691    #define CHAR_BEL                    '\a'
692    #ifdef EBCDIC
693    #define CHAR_ESC                    '\047'
694    #define CHAR_DEL                    '\007'
695    #else
696    #define CHAR_ESC                    '\033'
697    #define CHAR_DEL                    '\177'
698    #endif
699    
700    #define CHAR_SPACE                  ' '
701    #define CHAR_EXCLAMATION_MARK       '!'
702    #define CHAR_QUOTATION_MARK         '"'
703    #define CHAR_NUMBER_SIGN            '#'
704    #define CHAR_DOLLAR_SIGN            '$'
705    #define CHAR_PERCENT_SIGN           '%'
706    #define CHAR_AMPERSAND              '&'
707    #define CHAR_APOSTROPHE             '\''
708    #define CHAR_LEFT_PARENTHESIS       '('
709    #define CHAR_RIGHT_PARENTHESIS      ')'
710    #define CHAR_ASTERISK               '*'
711    #define CHAR_PLUS                   '+'
712    #define CHAR_COMMA                  ','
713    #define CHAR_MINUS                  '-'
714    #define CHAR_DOT                    '.'
715    #define CHAR_SLASH                  '/'
716    #define CHAR_0                      '0'
717    #define CHAR_1                      '1'
718    #define CHAR_2                      '2'
719    #define CHAR_3                      '3'
720    #define CHAR_4                      '4'
721    #define CHAR_5                      '5'
722    #define CHAR_6                      '6'
723    #define CHAR_7                      '7'
724    #define CHAR_8                      '8'
725    #define CHAR_9                      '9'
726    #define CHAR_COLON                  ':'
727    #define CHAR_SEMICOLON              ';'
728    #define CHAR_LESS_THAN_SIGN         '<'
729    #define CHAR_EQUALS_SIGN            '='
730    #define CHAR_GREATER_THAN_SIGN      '>'
731    #define CHAR_QUESTION_MARK          '?'
732    #define CHAR_COMMERCIAL_AT          '@'
733    #define CHAR_A                      'A'
734    #define CHAR_B                      'B'
735    #define CHAR_C                      'C'
736    #define CHAR_D                      'D'
737    #define CHAR_E                      'E'
738    #define CHAR_F                      'F'
739    #define CHAR_G                      'G'
740    #define CHAR_H                      'H'
741    #define CHAR_I                      'I'
742    #define CHAR_J                      'J'
743    #define CHAR_K                      'K'
744    #define CHAR_L                      'L'
745    #define CHAR_M                      'M'
746    #define CHAR_N                      'N'
747    #define CHAR_O                      'O'
748    #define CHAR_P                      'P'
749    #define CHAR_Q                      'Q'
750    #define CHAR_R                      'R'
751    #define CHAR_S                      'S'
752    #define CHAR_T                      'T'
753    #define CHAR_U                      'U'
754    #define CHAR_V                      'V'
755    #define CHAR_W                      'W'
756    #define CHAR_X                      'X'
757    #define CHAR_Y                      'Y'
758    #define CHAR_Z                      'Z'
759    #define CHAR_LEFT_SQUARE_BRACKET    '['
760    #define CHAR_BACKSLASH              '\\'
761    #define CHAR_RIGHT_SQUARE_BRACKET   ']'
762    #define CHAR_CIRCUMFLEX_ACCENT      '^'
763    #define CHAR_UNDERSCORE             '_'
764    #define CHAR_GRAVE_ACCENT           '`'
765    #define CHAR_a                      'a'
766    #define CHAR_b                      'b'
767    #define CHAR_c                      'c'
768    #define CHAR_d                      'd'
769    #define CHAR_e                      'e'
770    #define CHAR_f                      'f'
771    #define CHAR_g                      'g'
772    #define CHAR_h                      'h'
773    #define CHAR_i                      'i'
774    #define CHAR_j                      'j'
775    #define CHAR_k                      'k'
776    #define CHAR_l                      'l'
777    #define CHAR_m                      'm'
778    #define CHAR_n                      'n'
779    #define CHAR_o                      'o'
780    #define CHAR_p                      'p'
781    #define CHAR_q                      'q'
782    #define CHAR_r                      'r'
783    #define CHAR_s                      's'
784    #define CHAR_t                      't'
785    #define CHAR_u                      'u'
786    #define CHAR_v                      'v'
787    #define CHAR_w                      'w'
788    #define CHAR_x                      'x'
789    #define CHAR_y                      'y'
790    #define CHAR_z                      'z'
791    #define CHAR_LEFT_CURLY_BRACKET     '{'
792    #define CHAR_VERTICAL_LINE          '|'
793    #define CHAR_RIGHT_CURLY_BRACKET    '}'
794    #define CHAR_TILDE                  '~'
795    
796    #define STR_HT                      "\t"
797    #define STR_VT                      "\v"
798    #define STR_FF                      "\f"
799    #define STR_CR                      "\r"
800    #define STR_NL                      "\n"
801    #define STR_BS                      "\b"
802    #define STR_BEL                     "\a"
803    #ifdef EBCDIC
804    #define STR_ESC                     "\047"
805    #define STR_DEL                     "\007"
806    #else
807    #define STR_ESC                     "\033"
808    #define STR_DEL                     "\177"
809    #endif
810    
811    #define STR_SPACE                   " "
812    #define STR_EXCLAMATION_MARK        "!"
813    #define STR_QUOTATION_MARK          "\""
814    #define STR_NUMBER_SIGN             "#"
815    #define STR_DOLLAR_SIGN             "$"
816    #define STR_PERCENT_SIGN            "%"
817    #define STR_AMPERSAND               "&"
818    #define STR_APOSTROPHE              "'"
819    #define STR_LEFT_PARENTHESIS        "("
820    #define STR_RIGHT_PARENTHESIS       ")"
821    #define STR_ASTERISK                "*"
822    #define STR_PLUS                    "+"
823    #define STR_COMMA                   ","
824    #define STR_MINUS                   "-"
825    #define STR_DOT                     "."
826    #define STR_SLASH                   "/"
827    #define STR_0                       "0"
828    #define STR_1                       "1"
829    #define STR_2                       "2"
830    #define STR_3                       "3"
831    #define STR_4                       "4"
832    #define STR_5                       "5"
833    #define STR_6                       "6"
834    #define STR_7                       "7"
835    #define STR_8                       "8"
836    #define STR_9                       "9"
837    #define STR_COLON                   ":"
838    #define STR_SEMICOLON               ";"
839    #define STR_LESS_THAN_SIGN          "<"
840    #define STR_EQUALS_SIGN             "="
841    #define STR_GREATER_THAN_SIGN       ">"
842    #define STR_QUESTION_MARK           "?"
843    #define STR_COMMERCIAL_AT           "@"
844    #define STR_A                       "A"
845    #define STR_B                       "B"
846    #define STR_C                       "C"
847    #define STR_D                       "D"
848    #define STR_E                       "E"
849    #define STR_F                       "F"
850    #define STR_G                       "G"
851    #define STR_H                       "H"
852    #define STR_I                       "I"
853    #define STR_J                       "J"
854    #define STR_K                       "K"
855    #define STR_L                       "L"
856    #define STR_M                       "M"
857    #define STR_N                       "N"
858    #define STR_O                       "O"
859    #define STR_P                       "P"
860    #define STR_Q                       "Q"
861    #define STR_R                       "R"
862    #define STR_S                       "S"
863    #define STR_T                       "T"
864    #define STR_U                       "U"
865    #define STR_V                       "V"
866    #define STR_W                       "W"
867    #define STR_X                       "X"
868    #define STR_Y                       "Y"
869    #define STR_Z                       "Z"
870    #define STR_LEFT_SQUARE_BRACKET     "["
871    #define STR_BACKSLASH               "\\"
872    #define STR_RIGHT_SQUARE_BRACKET    "]"
873    #define STR_CIRCUMFLEX_ACCENT       "^"
874    #define STR_UNDERSCORE              "_"
875    #define STR_GRAVE_ACCENT            "`"
876    #define STR_a                       "a"
877    #define STR_b                       "b"
878    #define STR_c                       "c"
879    #define STR_d                       "d"
880    #define STR_e                       "e"
881    #define STR_f                       "f"
882    #define STR_g                       "g"
883    #define STR_h                       "h"
884    #define STR_i                       "i"
885    #define STR_j                       "j"
886    #define STR_k                       "k"
887    #define STR_l                       "l"
888    #define STR_m                       "m"
889    #define STR_n                       "n"
890    #define STR_o                       "o"
891    #define STR_p                       "p"
892    #define STR_q                       "q"
893    #define STR_r                       "r"
894    #define STR_s                       "s"
895    #define STR_t                       "t"
896    #define STR_u                       "u"
897    #define STR_v                       "v"
898    #define STR_w                       "w"
899    #define STR_x                       "x"
900    #define STR_y                       "y"
901    #define STR_z                       "z"
902    #define STR_LEFT_CURLY_BRACKET      "{"
903    #define STR_VERTICAL_LINE           "|"
904    #define STR_RIGHT_CURLY_BRACKET     "}"
905    #define STR_TILDE                   "~"
906    
907    #define STRING_ACCEPT0              "ACCEPT\0"
908    #define STRING_COMMIT0              "COMMIT\0"
909    #define STRING_F0                   "F\0"
910    #define STRING_FAIL0                "FAIL\0"
911    #define STRING_MARK0                "MARK\0"
912    #define STRING_PRUNE0               "PRUNE\0"
913    #define STRING_SKIP0                "SKIP\0"
914    #define STRING_THEN                 "THEN"
915    
916    #define STRING_alpha0               "alpha\0"
917    #define STRING_lower0               "lower\0"
918    #define STRING_upper0               "upper\0"
919    #define STRING_alnum0               "alnum\0"
920    #define STRING_ascii0               "ascii\0"
921    #define STRING_blank0               "blank\0"
922    #define STRING_cntrl0               "cntrl\0"
923    #define STRING_digit0               "digit\0"
924    #define STRING_graph0               "graph\0"
925    #define STRING_print0               "print\0"
926    #define STRING_punct0               "punct\0"
927    #define STRING_space0               "space\0"
928    #define STRING_word0                "word\0"
929    #define STRING_xdigit               "xdigit"
930    
931    #define STRING_DEFINE               "DEFINE"
932    
933    #define STRING_CR_RIGHTPAR             "CR)"
934    #define STRING_LF_RIGHTPAR             "LF)"
935    #define STRING_CRLF_RIGHTPAR           "CRLF)"
936    #define STRING_ANY_RIGHTPAR            "ANY)"
937    #define STRING_ANYCRLF_RIGHTPAR        "ANYCRLF)"
938    #define STRING_BSR_ANYCRLF_RIGHTPAR    "BSR_ANYCRLF)"
939    #define STRING_BSR_UNICODE_RIGHTPAR    "BSR_UNICODE)"
940    #define STRING_UTF8_RIGHTPAR           "UTF8)"
941    #define STRING_UCP_RIGHTPAR            "UCP)"
942    #define STRING_NO_START_OPT_RIGHTPAR   "NO_START_OPT)"
943    
944    #else  /* SUPPORT_UTF8 */
945    
946    /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
947    works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
948    only. */
949    
950    #define CHAR_HT                     '\011'
951    #define CHAR_VT                     '\013'
952    #define CHAR_FF                     '\014'
953    #define CHAR_CR                     '\015'
954    #define CHAR_NL                     '\012'
955    #define CHAR_BS                     '\010'
956    #define CHAR_BEL                    '\007'
957    #define CHAR_ESC                    '\033'
958    #define CHAR_DEL                    '\177'
959    
960    #define CHAR_SPACE                  '\040'
961    #define CHAR_EXCLAMATION_MARK       '\041'
962    #define CHAR_QUOTATION_MARK         '\042'
963    #define CHAR_NUMBER_SIGN            '\043'
964    #define CHAR_DOLLAR_SIGN            '\044'
965    #define CHAR_PERCENT_SIGN           '\045'
966    #define CHAR_AMPERSAND              '\046'
967    #define CHAR_APOSTROPHE             '\047'
968    #define CHAR_LEFT_PARENTHESIS       '\050'
969    #define CHAR_RIGHT_PARENTHESIS      '\051'
970    #define CHAR_ASTERISK               '\052'
971    #define CHAR_PLUS                   '\053'
972    #define CHAR_COMMA                  '\054'
973    #define CHAR_MINUS                  '\055'
974    #define CHAR_DOT                    '\056'
975    #define CHAR_SLASH                  '\057'
976    #define CHAR_0                      '\060'
977    #define CHAR_1                      '\061'
978    #define CHAR_2                      '\062'
979    #define CHAR_3                      '\063'
980    #define CHAR_4                      '\064'
981    #define CHAR_5                      '\065'
982    #define CHAR_6                      '\066'
983    #define CHAR_7                      '\067'
984    #define CHAR_8                      '\070'
985    #define CHAR_9                      '\071'
986    #define CHAR_COLON                  '\072'
987    #define CHAR_SEMICOLON              '\073'
988    #define CHAR_LESS_THAN_SIGN         '\074'
989    #define CHAR_EQUALS_SIGN            '\075'
990    #define CHAR_GREATER_THAN_SIGN      '\076'
991    #define CHAR_QUESTION_MARK          '\077'
992    #define CHAR_COMMERCIAL_AT          '\100'
993    #define CHAR_A                      '\101'
994    #define CHAR_B                      '\102'
995    #define CHAR_C                      '\103'
996    #define CHAR_D                      '\104'
997    #define CHAR_E                      '\105'
998    #define CHAR_F                      '\106'
999    #define CHAR_G                      '\107'
1000    #define CHAR_H                      '\110'
1001    #define CHAR_I                      '\111'
1002    #define CHAR_J                      '\112'
1003    #define CHAR_K                      '\113'
1004    #define CHAR_L                      '\114'
1005    #define CHAR_M                      '\115'
1006    #define CHAR_N                      '\116'
1007    #define CHAR_O                      '\117'
1008    #define CHAR_P                      '\120'
1009    #define CHAR_Q                      '\121'
1010    #define CHAR_R                      '\122'
1011    #define CHAR_S                      '\123'
1012    #define CHAR_T                      '\124'
1013    #define CHAR_U                      '\125'
1014    #define CHAR_V                      '\126'
1015    #define CHAR_W                      '\127'
1016    #define CHAR_X                      '\130'
1017    #define CHAR_Y                      '\131'
1018    #define CHAR_Z                      '\132'
1019    #define CHAR_LEFT_SQUARE_BRACKET    '\133'
1020    #define CHAR_BACKSLASH              '\134'
1021    #define CHAR_RIGHT_SQUARE_BRACKET   '\135'
1022    #define CHAR_CIRCUMFLEX_ACCENT      '\136'
1023    #define CHAR_UNDERSCORE             '\137'
1024    #define CHAR_GRAVE_ACCENT           '\140'
1025    #define CHAR_a                      '\141'
1026    #define CHAR_b                      '\142'
1027    #define CHAR_c                      '\143'
1028    #define CHAR_d                      '\144'
1029    #define CHAR_e                      '\145'
1030    #define CHAR_f                      '\146'
1031    #define CHAR_g                      '\147'
1032    #define CHAR_h                      '\150'
1033    #define CHAR_i                      '\151'
1034    #define CHAR_j                      '\152'
1035    #define CHAR_k                      '\153'
1036    #define CHAR_l                      '\154'
1037    #define CHAR_m                      '\155'
1038    #define CHAR_n                      '\156'
1039    #define CHAR_o                      '\157'
1040    #define CHAR_p                      '\160'
1041    #define CHAR_q                      '\161'
1042    #define CHAR_r                      '\162'
1043    #define CHAR_s                      '\163'
1044    #define CHAR_t                      '\164'
1045    #define CHAR_u                      '\165'
1046    #define CHAR_v                      '\166'
1047    #define CHAR_w                      '\167'
1048    #define CHAR_x                      '\170'
1049    #define CHAR_y                      '\171'
1050    #define CHAR_z                      '\172'
1051    #define CHAR_LEFT_CURLY_BRACKET     '\173'
1052    #define CHAR_VERTICAL_LINE          '\174'
1053    #define CHAR_RIGHT_CURLY_BRACKET    '\175'
1054    #define CHAR_TILDE                  '\176'
1055    
1056    #define STR_HT                      "\011"
1057    #define STR_VT                      "\013"
1058    #define STR_FF                      "\014"
1059    #define STR_CR                      "\015"
1060    #define STR_NL                      "\012"
1061    #define STR_BS                      "\010"
1062    #define STR_BEL                     "\007"
1063    #define STR_ESC                     "\033"
1064    #define STR_DEL                     "\177"
1065    
1066    #define STR_SPACE                   "\040"
1067    #define STR_EXCLAMATION_MARK        "\041"
1068    #define STR_QUOTATION_MARK          "\042"
1069    #define STR_NUMBER_SIGN             "\043"
1070    #define STR_DOLLAR_SIGN             "\044"
1071    #define STR_PERCENT_SIGN            "\045"
1072    #define STR_AMPERSAND               "\046"
1073    #define STR_APOSTROPHE              "\047"
1074    #define STR_LEFT_PARENTHESIS        "\050"
1075    #define STR_RIGHT_PARENTHESIS       "\051"
1076    #define STR_ASTERISK                "\052"
1077    #define STR_PLUS                    "\053"
1078    #define STR_COMMA                   "\054"
1079    #define STR_MINUS                   "\055"
1080    #define STR_DOT                     "\056"
1081    #define STR_SLASH                   "\057"
1082    #define STR_0                       "\060"
1083    #define STR_1                       "\061"
1084    #define STR_2                       "\062"
1085    #define STR_3                       "\063"
1086    #define STR_4                       "\064"
1087    #define STR_5                       "\065"
1088    #define STR_6                       "\066"
1089    #define STR_7                       "\067"
1090    #define STR_8                       "\070"
1091    #define STR_9                       "\071"
1092    #define STR_COLON                   "\072"
1093    #define STR_SEMICOLON               "\073"
1094    #define STR_LESS_THAN_SIGN          "\074"
1095    #define STR_EQUALS_SIGN             "\075"
1096    #define STR_GREATER_THAN_SIGN       "\076"
1097    #define STR_QUESTION_MARK           "\077"
1098    #define STR_COMMERCIAL_AT           "\100"
1099    #define STR_A                       "\101"
1100    #define STR_B                       "\102"
1101    #define STR_C                       "\103"
1102    #define STR_D                       "\104"
1103    #define STR_E                       "\105"
1104    #define STR_F                       "\106"
1105    #define STR_G                       "\107"
1106    #define STR_H                       "\110"
1107    #define STR_I                       "\111"
1108    #define STR_J                       "\112"
1109    #define STR_K                       "\113"
1110    #define STR_L                       "\114"
1111    #define STR_M                       "\115"
1112    #define STR_N                       "\116"
1113    #define STR_O                       "\117"
1114    #define STR_P                       "\120"
1115    #define STR_Q                       "\121"
1116    #define STR_R                       "\122"
1117    #define STR_S                       "\123"
1118    #define STR_T                       "\124"
1119    #define STR_U                       "\125"
1120    #define STR_V                       "\126"
1121    #define STR_W                       "\127"
1122    #define STR_X                       "\130"
1123    #define STR_Y                       "\131"
1124    #define STR_Z                       "\132"
1125    #define STR_LEFT_SQUARE_BRACKET     "\133"
1126    #define STR_BACKSLASH               "\134"
1127    #define STR_RIGHT_SQUARE_BRACKET    "\135"
1128    #define STR_CIRCUMFLEX_ACCENT       "\136"
1129    #define STR_UNDERSCORE              "\137"
1130    #define STR_GRAVE_ACCENT            "\140"
1131    #define STR_a                       "\141"
1132    #define STR_b                       "\142"
1133    #define STR_c                       "\143"
1134    #define STR_d                       "\144"
1135    #define STR_e                       "\145"
1136    #define STR_f                       "\146"
1137    #define STR_g                       "\147"
1138    #define STR_h                       "\150"
1139    #define STR_i                       "\151"
1140    #define STR_j                       "\152"
1141    #define STR_k                       "\153"
1142    #define STR_l                       "\154"
1143    #define STR_m                       "\155"
1144    #define STR_n                       "\156"
1145    #define STR_o                       "\157"
1146    #define STR_p                       "\160"
1147    #define STR_q                       "\161"
1148    #define STR_r                       "\162"
1149    #define STR_s                       "\163"
1150    #define STR_t                       "\164"
1151    #define STR_u                       "\165"
1152    #define STR_v                       "\166"
1153    #define STR_w                       "\167"
1154    #define STR_x                       "\170"
1155    #define STR_y                       "\171"
1156    #define STR_z                       "\172"
1157    #define STR_LEFT_CURLY_BRACKET      "\173"
1158    #define STR_VERTICAL_LINE           "\174"
1159    #define STR_RIGHT_CURLY_BRACKET     "\175"
1160    #define STR_TILDE                   "\176"
1161    
1162    #define STRING_ACCEPT0              STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1163    #define STRING_COMMIT0              STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1164    #define STRING_F0                   STR_F "\0"
1165    #define STRING_FAIL0                STR_F STR_A STR_I STR_L "\0"
1166    #define STRING_MARK0                STR_M STR_A STR_R STR_K "\0"
1167    #define STRING_PRUNE0               STR_P STR_R STR_U STR_N STR_E "\0"
1168    #define STRING_SKIP0                STR_S STR_K STR_I STR_P "\0"
1169    #define STRING_THEN                 STR_T STR_H STR_E STR_N
1170    
1171    #define STRING_alpha0               STR_a STR_l STR_p STR_h STR_a "\0"
1172    #define STRING_lower0               STR_l STR_o STR_w STR_e STR_r "\0"
1173    #define STRING_upper0               STR_u STR_p STR_p STR_e STR_r "\0"
1174    #define STRING_alnum0               STR_a STR_l STR_n STR_u STR_m "\0"
1175    #define STRING_ascii0               STR_a STR_s STR_c STR_i STR_i "\0"
1176    #define STRING_blank0               STR_b STR_l STR_a STR_n STR_k "\0"
1177    #define STRING_cntrl0               STR_c STR_n STR_t STR_r STR_l "\0"
1178    #define STRING_digit0               STR_d STR_i STR_g STR_i STR_t "\0"
1179    #define STRING_graph0               STR_g STR_r STR_a STR_p STR_h "\0"
1180    #define STRING_print0               STR_p STR_r STR_i STR_n STR_t "\0"
1181    #define STRING_punct0               STR_p STR_u STR_n STR_c STR_t "\0"
1182    #define STRING_space0               STR_s STR_p STR_a STR_c STR_e "\0"
1183    #define STRING_word0                STR_w STR_o STR_r STR_d       "\0"
1184    #define STRING_xdigit               STR_x STR_d STR_i STR_g STR_i STR_t
1185    
1186    #define STRING_DEFINE               STR_D STR_E STR_F STR_I STR_N STR_E
1187    
1188    #define STRING_CR_RIGHTPAR             STR_C STR_R STR_RIGHT_PARENTHESIS
1189    #define STRING_LF_RIGHTPAR             STR_L STR_F STR_RIGHT_PARENTHESIS
1190    #define STRING_CRLF_RIGHTPAR           STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1191    #define STRING_ANY_RIGHTPAR            STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1192    #define STRING_ANYCRLF_RIGHTPAR        STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1193    #define STRING_BSR_ANYCRLF_RIGHTPAR    STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1194    #define STRING_BSR_UNICODE_RIGHTPAR    STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS
1195    #define STRING_UTF8_RIGHTPAR           STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1196    #define STRING_UCP_RIGHTPAR            STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
1197    #define STRING_NO_START_OPT_RIGHTPAR   STR_N STR_O STR_UNDERSCORE STR_S STR_T STR_A STR_R STR_T STR_UNDERSCORE STR_O STR_P STR_T STR_RIGHT_PARENTHESIS
1198    
1199    #endif  /* SUPPORT_UTF8 */
1200    
1201  /* Escape items that are just an encoding of a particular data value. */  /* Escape items that are just an encoding of a particular data value. */
1202    
1203  #ifndef ESC_e  #ifndef ESC_e
1204  #define ESC_e 27  #define ESC_e CHAR_ESC
1205  #endif  #endif
1206    
1207  #ifndef ESC_f  #ifndef ESC_f
1208  #define ESC_f '\f'  #define ESC_f CHAR_FF
1209  #endif  #endif
1210    
1211  #ifndef ESC_n  #ifndef ESC_n
1212  #define ESC_n '\n'  #define ESC_n CHAR_NL
1213  #endif  #endif
1214    
1215  #ifndef ESC_r  #ifndef ESC_r
1216  #define ESC_r '\r'  #define ESC_r CHAR_CR
1217  #endif  #endif
1218    
1219  /* We can't officially use ESC_t because it is a POSIX reserved identifier  /* We can't officially use ESC_t because it is a POSIX reserved identifier
1220  (presumably because of all the others like size_t). */  (presumably because of all the others like size_t). */
1221    
1222  #ifndef ESC_tee  #ifndef ESC_tee
1223  #define ESC_tee '\t'  #define ESC_tee CHAR_HT
1224  #endif  #endif
1225    
1226  /* Codes for different types of Unicode property */  /* Codes for different types of Unicode property */
1227    
1228  #define PT_ANY        0    /* Any property - matches all chars */  #define PT_ANY        0    /* Any property - matches all chars */
1229  #define PT_LAMP       1    /* L& - the union of Lu, Ll, Lt */  #define PT_LAMP       1    /* L& - the union of Lu, Ll, Lt */
1230  #define PT_GC         2    /* General characteristic (e.g. L) */  #define PT_GC         2    /* Specified general characteristic (e.g. L) */
1231  #define PT_PC         3    /* Particular characteristic (e.g. Lu) */  #define PT_PC         3    /* Specified particular characteristic (e.g. Lu) */
1232  #define PT_SC         4    /* Script (e.g. Han) */  #define PT_SC         4    /* Script (e.g. Han) */
1233    #define PT_ALNUM      5    /* Alphanumeric - the union of L and N */
1234    #define PT_SPACE      6    /* Perl space - Z plus 9,10,12,13 */
1235    #define PT_PXSPACE    7    /* POSIX space - Z plus 9,10,11,12,13 */
1236    #define PT_WORD       8    /* Word - L plus N plus underscore */
1237    
1238  /* Flag bits and data types for the extended class (OP_XCLASS) for classes that  /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1239  contain UTF-8 characters with values greater than 255. */  contain UTF-8 characters with values greater than 255. */
# Line 595  contain UTF-8 characters with values gre Line 1250  contain UTF-8 characters with values gre
1250  /* These are escaped items that aren't just an encoding of a particular data  /* These are escaped items that aren't just an encoding of a particular data
1251  value such as \n. They must have non-zero values, as check_escape() returns  value such as \n. They must have non-zero values, as check_escape() returns
1252  their negation. Also, they must appear in the same order as in the opcode  their negation. Also, they must appear in the same order as in the opcode
1253  definitions below, up to ESC_z. There's a dummy for OP_ANY because it  definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
1254  corresponds to "." rather than an escape sequence. The final one must be  corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1255  ESC_REF as subsequent values are used for backreferences (\1, \2, \3, etc).  used for [^] in JavaScript compatibility mode. In non-DOTALL mode, "." behaves
1256  There are two tests in the code for an escape greater than ESC_b and less than  like \N.
1257  ESC_Z to detect the types that may be repeated. These are the types that  
1258  consume characters. If any new escapes are put in between that don't consume a  The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
1259  character, that code will have to change. */  when PCRE_UCP is set, when replacement of \d etc by \p sequences is required.
1260    They must be contiguous, and remain in order so that the replacements can be
1261    looked up from a table.
1262    
1263    The final escape must be ESC_REF as subsequent values are used for
1264    backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
1265    greater than ESC_b and less than ESC_Z to detect the types that may be
1266    repeated. These are the types that consume characters. If any new escapes are
1267    put in between that don't consume a character, that code will have to change.
1268    */
1269    
1270  enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,  enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1271         ESC_W, ESC_w, ESC_dum1, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H, ESC_h,         ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1272         ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_k, ESC_REF };         ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
1273           ESC_E, ESC_Q, ESC_g, ESC_k,
1274           ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu,
1275           ESC_REF };
1276    
1277  /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to  /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1278  OP_EOD must correspond in order to the list of escapes immediately above.  OP_EOD must correspond in order to the list of escapes immediately above.
1279    
1280  *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions  *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1281  that follow must also be updated to match. There is also a table called  that follow must also be updated to match. There are also tables called
1282  "coptable" in pcre_dfa_exec.c that must be updated. */  "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1283    
1284  enum {  enum {
1285    OP_END,            /* 0 End of pattern */    OP_END,            /* 0 End of pattern */
# Line 631  enum { Line 1297  enum {
1297    OP_WHITESPACE,         /*  9 \s */    OP_WHITESPACE,         /*  9 \s */
1298    OP_NOT_WORDCHAR,       /* 10 \W */    OP_NOT_WORDCHAR,       /* 10 \W */
1299    OP_WORDCHAR,           /* 11 \w */    OP_WORDCHAR,           /* 11 \w */
   OP_ANY,            /* 12 Match any character */  
   OP_ANYBYTE,        /* 13 Match any byte (\C); different to OP_ANY for UTF-8 */  
   OP_NOTPROP,        /* 14 \P (not Unicode property) */  
   OP_PROP,           /* 15 \p (Unicode property) */  
   OP_ANYNL,          /* 16 \R (any newline sequence) */  
   OP_NOT_HSPACE,     /* 17 \H (not horizontal whitespace) */  
   OP_HSPACE,         /* 18 \h (horizontal whitespace) */  
   OP_NOT_VSPACE,     /* 19 \V (not vertical whitespace) */  
   OP_VSPACE,         /* 20 \v (vertical whitespace) */  
   OP_EXTUNI,         /* 21 \X (extended Unicode sequence */  
   OP_EODN,           /* 22 End of data or \n at end of data: \Z. */  
   OP_EOD,            /* 23 End of data: \z */  
   
   OP_OPT,            /* 24 Set runtime options */  
   OP_CIRC,           /* 25 Start of line - varies with multiline switch */  
   OP_DOLL,           /* 26 End of line - varies with multiline switch */  
   OP_CHAR,           /* 27 Match one character, casefully */  
   OP_CHARNC,         /* 28 Match one character, caselessly */  
   OP_NOT,            /* 29 Match one character, not the following one */  
   
   OP_STAR,           /* 30 The maximizing and minimizing versions of */  
   OP_MINSTAR,        /* 31 these six opcodes must come in pairs, with */  
   OP_PLUS,           /* 32 the minimizing one second. */  
   OP_MINPLUS,        /* 33 This first set applies to single characters.*/  
   OP_QUERY,          /* 34 */  
   OP_MINQUERY,       /* 35 */  
   
   OP_UPTO,           /* 36 From 0 to n matches */  
   OP_MINUPTO,        /* 37 */  
   OP_EXACT,          /* 38 Exactly n matches */  
   
   OP_POSSTAR,        /* 39 Possessified star */  
   OP_POSPLUS,        /* 40 Possessified plus */  
   OP_POSQUERY,       /* 41 Posesssified query */  
   OP_POSUPTO,        /* 42 Possessified upto */  
   
   OP_NOTSTAR,        /* 43 The maximizing and minimizing versions of */  
   OP_NOTMINSTAR,     /* 44 these six opcodes must come in pairs, with */  
   OP_NOTPLUS,        /* 45 the minimizing one second. They must be in */  
   OP_NOTMINPLUS,     /* 46 exactly the same order as those above. */  
   OP_NOTQUERY,       /* 47 This set applies to "not" single characters. */  
   OP_NOTMINQUERY,    /* 48 */  
   
   OP_NOTUPTO,        /* 49 From 0 to n matches */  
   OP_NOTMINUPTO,     /* 50 */  
   OP_NOTEXACT,       /* 51 Exactly n matches */  
   
   OP_NOTPOSSTAR,     /* 52 Possessified versions */  
   OP_NOTPOSPLUS,     /* 53 */  
   OP_NOTPOSQUERY,    /* 54 */  
   OP_NOTPOSUPTO,     /* 55 */  
   
   OP_TYPESTAR,       /* 56 The maximizing and minimizing versions of */  
   OP_TYPEMINSTAR,    /* 57 these six opcodes must come in pairs, with */  
   OP_TYPEPLUS,       /* 58 the minimizing one second. These codes must */  
   OP_TYPEMINPLUS,    /* 59 be in exactly the same order as those above. */  
   OP_TYPEQUERY,      /* 60 This set applies to character types such as \d */  
   OP_TYPEMINQUERY,   /* 61 */  
   
   OP_TYPEUPTO,       /* 62 From 0 to n matches */  
   OP_TYPEMINUPTO,    /* 63 */  
   OP_TYPEEXACT,      /* 64 Exactly n matches */  
   
   OP_TYPEPOSSTAR,    /* 65 Possessified versions */  
   OP_TYPEPOSPLUS,    /* 66 */  
   OP_TYPEPOSQUERY,   /* 67 */  
   OP_TYPEPOSUPTO,    /* 68 */  
   
   OP_CRSTAR,         /* 69 The maximizing and minimizing versions of */  
   OP_CRMINSTAR,      /* 70 all these opcodes must come in pairs, with */  
   OP_CRPLUS,         /* 71 the minimizing one second. These codes must */  
   OP_CRMINPLUS,      /* 72 be in exactly the same order as those above. */  
   OP_CRQUERY,        /* 73 These are for character classes and back refs */  
   OP_CRMINQUERY,     /* 74 */  
   OP_CRRANGE,        /* 75 These are different to the three sets above. */  
   OP_CRMINRANGE,     /* 76 */  
   
   OP_CLASS,          /* 77 Match a character class, chars < 256 only */  
   OP_NCLASS,         /* 78 Same, but the bitmap was created from a negative  
                            class - the difference is relevant only when a UTF-8  
                            character > 255 is encountered. */  
   
   OP_XCLASS,         /* 79 Extended class for handling UTF-8 chars within the  
                            class. This does both positive and negative. */  
   
   OP_REF,            /* 80 Match a back reference */  
   OP_RECURSE,        /* 81 Match a numbered subpattern (possibly recursive) */  
   OP_CALLOUT,        /* 82 Call out to external function if provided */  
   
   OP_ALT,            /* 83 Start of alternation */  
   OP_KET,            /* 84 End of group that doesn't have an unbounded repeat */  
   OP_KETRMAX,        /* 85 These two must remain together and in this */  
   OP_KETRMIN,        /* 86 order. They are for groups the repeat for ever. */  
   
   /* The assertions must come before BRA, CBRA, ONCE, and COND.*/  
   
   OP_ASSERT,         /* 87 Positive lookahead */  
   OP_ASSERT_NOT,     /* 88 Negative lookahead */  
   OP_ASSERTBACK,     /* 89 Positive lookbehind */  
   OP_ASSERTBACK_NOT, /* 90 Negative lookbehind */  
   OP_REVERSE,        /* 91 Move pointer back - used in lookbehind assertions */  
   
   /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,  
   as there's a test for >= ONCE for a subpattern that isn't an assertion. */  
   
   OP_ONCE,           /* 92 Atomic group */  
   OP_BRA,            /* 93 Start of non-capturing bracket */  
   OP_CBRA,           /* 94 Start of capturing bracket */  
   OP_COND,           /* 95 Conditional group */  
1300    
1301    /* These three must follow the previous three, in the same order. There's a    OP_ANY,            /* 12 Match any character except newline */
1302    check for >= SBRA to distinguish the two sets. */    OP_ALLANY,         /* 13 Match any character */
1303      OP_ANYBYTE,        /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1304      OP_NOTPROP,        /* 15 \P (not Unicode property) */
1305      OP_PROP,           /* 16 \p (Unicode property) */
1306      OP_ANYNL,          /* 17 \R (any newline sequence) */
1307      OP_NOT_HSPACE,     /* 18 \H (not horizontal whitespace) */
1308      OP_HSPACE,         /* 19 \h (horizontal whitespace) */
1309      OP_NOT_VSPACE,     /* 20 \V (not vertical whitespace) */
1310      OP_VSPACE,         /* 21 \v (vertical whitespace) */
1311      OP_EXTUNI,         /* 22 \X (extended Unicode sequence */
1312      OP_EODN,           /* 23 End of data or \n at end of data: \Z. */
1313      OP_EOD,            /* 24 End of data: \z */
1314    
1315      OP_CIRC,           /* 25 Start of line - not multiline */
1316      OP_CIRCM,          /* 26 Start of line - multiline */
1317      OP_DOLL,           /* 27 End of line - not multiline */
1318      OP_DOLLM,          /* 28 End of line - multiline */
1319      OP_CHAR,           /* 29 Match one character, casefully */
1320      OP_CHARI,          /* 30 Match one character, caselessly */
1321      OP_NOT,            /* 31 Match one character, not the given one, casefully */
1322      OP_NOTI,           /* 32 Match one character, not the given one, caselessly */
1323    
1324      /* The following sets of 13 opcodes must always be kept in step because
1325      the offset from the first one is used to generate the others. */
1326    
1327      /**** Single characters, caseful, must precede the caseless ones ****/
1328    
1329      OP_STAR,           /* 33 The maximizing and minimizing versions of */
1330      OP_MINSTAR,        /* 34 these six opcodes must come in pairs, with */
1331      OP_PLUS,           /* 35 the minimizing one second. */
1332      OP_MINPLUS,        /* 36 */
1333      OP_QUERY,          /* 37 */
1334      OP_MINQUERY,       /* 38 */
1335    
1336      OP_UPTO,           /* 39 From 0 to n matches of one character, caseful*/
1337      OP_MINUPTO,        /* 40 */
1338      OP_EXACT,          /* 41 Exactly n matches */
1339    
1340      OP_POSSTAR,        /* 42 Possessified star, caseful */
1341      OP_POSPLUS,        /* 43 Possessified plus, caseful */
1342      OP_POSQUERY,       /* 44 Posesssified query, caseful */
1343      OP_POSUPTO,        /* 45 Possessified upto, caseful */
1344    
1345      /**** Single characters, caseless, must follow the caseful ones */
1346    
1347      OP_STARI,          /* 46 */
1348      OP_MINSTARI,       /* 47 */
1349      OP_PLUSI,          /* 48 */
1350      OP_MINPLUSI,       /* 49 */
1351      OP_QUERYI,         /* 50 */
1352      OP_MINQUERYI,      /* 51 */
1353    
1354      OP_UPTOI,          /* 52 From 0 to n matches of one character, caseless */
1355      OP_MINUPTOI,       /* 53 */
1356      OP_EXACTI,         /* 54 */
1357    
1358      OP_POSSTARI,       /* 55 Possessified star, caseless */
1359      OP_POSPLUSI,       /* 56 Possessified plus, caseless */
1360      OP_POSQUERYI,      /* 57 Posesssified query, caseless */
1361      OP_POSUPTOI,       /* 58 Possessified upto, caseless */
1362    
1363      /**** The negated ones must follow the non-negated ones, and match them ****/
1364      /**** Negated single character, caseful; must precede the caseless ones ****/
1365    
1366      OP_NOTSTAR,        /* 59 The maximizing and minimizing versions of */
1367      OP_NOTMINSTAR,     /* 60 these six opcodes must come in pairs, with */
1368      OP_NOTPLUS,        /* 61 the minimizing one second. They must be in */
1369      OP_NOTMINPLUS,     /* 62 exactly the same order as those above. */
1370      OP_NOTQUERY,       /* 63 */
1371      OP_NOTMINQUERY,    /* 64 */
1372    
1373      OP_NOTUPTO,        /* 65 From 0 to n matches, caseful */
1374      OP_NOTMINUPTO,     /* 66 */
1375      OP_NOTEXACT,       /* 67 Exactly n matches */
1376    
1377      OP_NOTPOSSTAR,     /* 68 Possessified versions, caseful */
1378      OP_NOTPOSPLUS,     /* 69 */
1379      OP_NOTPOSQUERY,    /* 70 */
1380      OP_NOTPOSUPTO,     /* 71 */
1381    
1382      /**** Negated single character, caseless; must follow the caseful ones ****/
1383    
1384      OP_NOTSTARI,       /* 72 */
1385      OP_NOTMINSTARI,    /* 73 */
1386      OP_NOTPLUSI,       /* 74 */
1387      OP_NOTMINPLUSI,    /* 75 */
1388      OP_NOTQUERYI,      /* 76 */
1389      OP_NOTMINQUERYI,   /* 77 */
1390    
1391      OP_NOTUPTOI,       /* 78 From 0 to n matches, caseless */
1392      OP_NOTMINUPTOI,    /* 79 */
1393      OP_NOTEXACTI,      /* 80 Exactly n matches */
1394    
1395      OP_NOTPOSSTARI,    /* 81 Possessified versions, caseless */
1396      OP_NOTPOSPLUSI,    /* 82 */
1397      OP_NOTPOSQUERYI,   /* 83 */
1398      OP_NOTPOSUPTOI,    /* 84 */
1399    
1400      /**** Character types ****/
1401    
1402      OP_TYPESTAR,       /* 85 The maximizing and minimizing versions of */
1403      OP_TYPEMINSTAR,    /* 86 these six opcodes must come in pairs, with */
1404      OP_TYPEPLUS,       /* 87 the minimizing one second. These codes must */
1405      OP_TYPEMINPLUS,    /* 88 be in exactly the same order as those above. */
1406      OP_TYPEQUERY,      /* 89 */
1407      OP_TYPEMINQUERY,   /* 90 */
1408    
1409      OP_TYPEUPTO,       /* 91 From 0 to n matches */
1410      OP_TYPEMINUPTO,    /* 92 */
1411      OP_TYPEEXACT,      /* 93 Exactly n matches */
1412    
1413      OP_TYPEPOSSTAR,    /* 94 Possessified versions */
1414      OP_TYPEPOSPLUS,    /* 95 */
1415      OP_TYPEPOSQUERY,   /* 96 */
1416      OP_TYPEPOSUPTO,    /* 97 */
1417    
1418      /* These are used for character classes and back references; only the
1419      first six are the same as the sets above. */
1420    
1421      OP_CRSTAR,         /* 98 The maximizing and minimizing versions of */
1422      OP_CRMINSTAR,      /* 99 all these opcodes must come in pairs, with */
1423      OP_CRPLUS,         /* 100 the minimizing one second. These codes must */
1424      OP_CRMINPLUS,      /* 101 be in exactly the same order as those above. */
1425      OP_CRQUERY,        /* 102 */
1426      OP_CRMINQUERY,     /* 103 */
1427    
1428      OP_CRRANGE,        /* 104 These are different to the three sets above. */
1429      OP_CRMINRANGE,     /* 105 */
1430    
1431      /* End of quantifier opcodes */
1432    
1433      OP_CLASS,          /* 106 Match a character class, chars < 256 only */
1434      OP_NCLASS,         /* 107 Same, but the bitmap was created from a negative
1435                                  class - the difference is relevant only when a
1436                                  UTF-8 character > 255 is encountered. */
1437      OP_XCLASS,         /* 108 Extended class for handling UTF-8 chars within the
1438                                  class. This does both positive and negative. */
1439      OP_REF,            /* 109 Match a back reference, casefully */
1440      OP_REFI,           /* 110 Match a back reference, caselessly */
1441      OP_RECURSE,        /* 111 Match a numbered subpattern (possibly recursive) */
1442      OP_CALLOUT,        /* 112 Call out to external function if provided */
1443    
1444      OP_ALT,            /* 113 Start of alternation */
1445      OP_KET,            /* 114 End of group that doesn't have an unbounded repeat */
1446      OP_KETRMAX,        /* 115 These two must remain together and in this */
1447      OP_KETRMIN,        /* 116 order. They are for groups the repeat for ever. */
1448      OP_KETRPOS,        /* 117 Possessive unlimited repeat. */
1449    
1450      /* The assertions must come before BRA, CBRA, ONCE, and COND, and the four
1451      asserts must remain in order. */
1452    
1453      OP_REVERSE,        /* 118 Move pointer back - used in lookbehind assertions */
1454      OP_ASSERT,         /* 119 Positive lookahead */
1455      OP_ASSERT_NOT,     /* 120 Negative lookahead */
1456      OP_ASSERTBACK,     /* 121 Positive lookbehind */
1457      OP_ASSERTBACK_NOT, /* 122 Negative lookbehind */
1458    
1459      /* ONCE, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately after the
1460      assertions, with ONCE first, as there's a test for >= ONCE for a subpattern
1461      that isn't an assertion. The POS versions must immediately follow the non-POS
1462      versions in each case. */
1463    
1464      OP_ONCE,           /* 123 Atomic group */
1465      OP_BRA,            /* 124 Start of non-capturing bracket */
1466      OP_BRAPOS,         /* 125 Ditto, with unlimited, possessive repeat */
1467      OP_CBRA,           /* 126 Start of capturing bracket */
1468      OP_CBRAPOS,        /* 127 Ditto, with unlimited, possessive repeat */
1469      OP_COND,           /* 128 Conditional group */
1470    
1471    OP_SBRA,           /* 96 Start of non-capturing bracket, check empty  */    /* These five must follow the previous five, in the same order. There's a
1472    OP_SCBRA,          /* 97 Start of capturing bracket, check empty */    check for >= SBRA to distinguish the two sets. */
   OP_SCOND,          /* 98 Conditional group, check empty */  
   
   OP_CREF,           /* 99 Used to hold a capture number as condition */  
   OP_RREF,           /* 100 Used to hold a recursion number as condition */  
   OP_DEF,            /* 101 The DEFINE condition */  
1473    
1474    OP_BRAZERO,        /* 102 These two must remain together and in this */    OP_SBRA,           /* 129 Start of non-capturing bracket, check empty  */
1475    OP_BRAMINZERO,     /* 103 order. */    OP_SBRAPOS,        /* 130 Ditto, with unlimited, possessive repeat */
1476      OP_SCBRA,          /* 131 Start of capturing bracket, check empty */
1477      OP_SCBRAPOS,       /* 132 Ditto, with unlimited, possessive repeat */
1478      OP_SCOND,          /* 133 Conditional group, check empty */
1479    
1480      /* The next two pairs must (respectively) be kept together. */
1481    
1482      OP_CREF,           /* 134 Used to hold a capture number as condition */
1483      OP_NCREF,          /* 135 Same, but generated by a name reference*/
1484      OP_RREF,           /* 136 Used to hold a recursion number as condition */
1485      OP_NRREF,          /* 137 Same, but generated by a name reference*/
1486      OP_DEF,            /* 138 The DEFINE condition */
1487    
1488      OP_BRAZERO,        /* 139 These two must remain together and in this */
1489      OP_BRAMINZERO,     /* 140 order. */
1490      OP_BRAPOSZERO,     /* 141 */
1491    
1492    /* These are backtracking control verbs */    /* These are backtracking control verbs */
1493    
1494    OP_PRUNE,          /* 104 */    OP_MARK,           /* 142 always has an argument */
1495    OP_SKIP,           /* 105 */    OP_PRUNE,          /* 143 */
1496    OP_THEN,           /* 106 */    OP_PRUNE_ARG,      /* 144 same, but with argument */
1497    OP_COMMIT,         /* 107 */    OP_SKIP,           /* 145 */
1498      OP_SKIP_ARG,       /* 146 same, but with argument */
1499      OP_THEN,           /* 147 */
1500      OP_THEN_ARG,       /* 148 same, but with argument */
1501      OP_COMMIT,         /* 149 */
1502    
1503    /* These are forced failure and success verbs */    /* These are forced failure and success verbs */
1504    
1505    OP_FAIL,           /* 108 */    OP_FAIL,           /* 150 */
1506    OP_ACCEPT          /* 109 */    OP_ACCEPT,         /* 151 */
1507      OP_ASSERT_ACCEPT,  /* 152 Used inside assertions */
1508      OP_CLOSE,          /* 153 Used before OP_ACCEPT to close open captures */
1509    
1510      /* This is used to skip a subpattern with a {0} quantifier */
1511    
1512      OP_SKIPZERO,       /* 154 */
1513    
1514      /* This is not an opcode, but is used to check that tables indexed by opcode
1515      are the correct length, in order to catch updating errors - there have been
1516      some in the past. */
1517    
1518      OP_TABLE_LENGTH
1519  };  };
1520    
1521    /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
1522    definitions that follow must also be updated to match. There are also tables
1523    called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1524    
1525    
1526  /* This macro defines textual names for all the opcodes. These are used only  /* This macro defines textual names for all the opcodes. These are used only
1527  for debugging. The macro is referenced only in pcre_printint.c. */  for debugging, and some of them are only partial names. The macro is referenced
1528    only in pcre_printint.c, which fills out the full names in many cases (and in
1529    some cases doesn't actually use these names at all). */
1530    
1531  #define OP_NAME_LIST \  #define OP_NAME_LIST \
1532    "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d",         \    "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d",         \
1533    "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte",                   \    "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte",         \
1534    "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v",           \    "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v",           \
1535    "extuni",  "\\Z", "\\z",                                        \    "extuni",  "\\Z", "\\z",                                        \
1536    "Opt", "^", "$", "char", "charnc", "not",                       \    "^", "^", "$", "$", "char", "chari", "not", "noti",             \
1537    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??",                                \
1538      "{", "{", "{",                                                  \
1539    "*+","++", "?+", "{",                                           \    "*+","++", "?+", "{",                                           \
1540    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??",                                \
1541      "{", "{", "{",                                                  \
1542      "*+","++", "?+", "{",                                           \
1543      "*", "*?", "+", "+?", "?", "??",                                \
1544      "{", "{", "{",                                                  \
1545      "*+","++", "?+", "{",                                           \
1546      "*", "*?", "+", "+?", "?", "??",                                \
1547      "{", "{", "{",                                                  \
1548    "*+","++", "?+", "{",                                           \    "*+","++", "?+", "{",                                           \
1549    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
1550    "*+","++", "?+", "{",                                           \    "*+","++", "?+", "{",                                           \
1551    "*", "*?", "+", "+?", "?", "??", "{", "{",                      \    "*", "*?", "+", "+?", "?", "??", "{", "{",                      \
1552    "class", "nclass", "xclass", "Ref", "Recurse", "Callout",       \    "class", "nclass", "xclass", "Ref", "Refi",                     \
1553    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",     \    "Recurse", "Callout",                                           \
1554    "AssertB", "AssertB not", "Reverse",                            \    "Alt", "Ket", "KetRmax", "KetRmin", "KetRpos",                  \
1555    "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond",        \    "Reverse", "Assert", "Assert not", "AssertB", "AssertB not",    \
1556    "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero",    \    "Once",                                                         \
1557    "*PRUNE", "*SKIP", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT"    "Bra", "BraPos", "CBra", "CBraPos",                             \
1558      "Cond",                                                         \
1559      "SBra", "SBraPos", "SCBra", "SCBraPos",                         \
1560      "SCond",                                                        \
1561      "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def",   \
1562      "Brazero", "Braminzero", "Braposzero",                          \
1563      "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP",                  \
1564      "*THEN", "*THEN", "*COMMIT", "*FAIL",                           \
1565      "*ACCEPT", "*ASSERT_ACCEPT",                                    \
1566      "Close", "Skip zero"
1567    
1568    
1569  /* This macro defines the length of fixed length operations in the compiled  /* This macro defines the length of fixed length operations in the compiled
# Line 806  in UTF-8 mode. The code that uses this t Line 1579  in UTF-8 mode. The code that uses this t
1579    1,                             /* End                                    */ \    1,                             /* End                                    */ \
1580    1, 1, 1, 1, 1,                 /* \A, \G, \K, \B, \b                     */ \    1, 1, 1, 1, 1,                 /* \A, \G, \K, \B, \b                     */ \
1581    1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */ \    1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */ \
1582    1, 1,                          /* Any, Anybyte                           */ \    1, 1, 1,                       /* Any, AllAny, Anybyte                   */ \
1583    3, 3, 1,                       /* NOTPROP, PROP, EXTUNI                  */ \    3, 3,                          /* \P, \p                                 */ \
1584    1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */ \    1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */ \
1585    1, 1, 2, 1, 1,                 /* \Z, \z, Opt, ^, $                      */ \    1,                             /* \X                                     */ \
1586      1, 1, 1, 1, 1, 1,              /* \Z, \z, ^, ^M, $, $M                   */ \
1587    2,                             /* Char  - the minimum length             */ \    2,                             /* Char  - the minimum length             */ \
1588    2,                             /* Charnc  - the minimum length           */ \    2,                             /* Chari  - the minimum length            */ \
1589    2,                             /* not                                    */ \    2,                             /* not                                    */ \
1590    /* Positive single-char repeats                            ** These are  */ \    2,                             /* noti                                   */ \
1591    2, 2, 2, 2, 2, 2,              /* *, *?, +, +?, ?, ??      ** minima in  */ \    /* Positive single-char repeats                             ** These are */ \
1592    4, 4, 4,                       /* upto, minupto, exact     ** UTF-8 mode */ \    2, 2, 2, 2, 2, 2,              /* *, *?, +, +?, ?, ??       ** minima in */ \
1593      4, 4, 4,                       /* upto, minupto, exact      ** mode      */ \
1594    2, 2, 2, 4,                    /* *+, ++, ?+, upto+                      */ \    2, 2, 2, 4,                    /* *+, ++, ?+, upto+                      */ \
1595      2, 2, 2, 2, 2, 2,              /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8     */ \
1596      4, 4, 4,                       /* upto I, minupto I, exact I             */ \
1597      2, 2, 2, 4,                    /* *+I, ++I, ?+I, upto+I                  */ \
1598    /* Negative single-char repeats - only for chars < 256                   */ \    /* Negative single-char repeats - only for chars < 256                   */ \
1599    2, 2, 2, 2, 2, 2,              /* NOT *, *?, +, +?, ?, ??                */ \    2, 2, 2, 2, 2, 2,              /* NOT *, *?, +, +?, ?, ??                */ \
1600    4, 4, 4,                       /* NOT upto, minupto, exact               */ \    4, 4, 4,                       /* NOT upto, minupto, exact               */ \
1601    2, 2, 2, 4,                    /* Possessive *, +, ?, upto               */ \    2, 2, 2, 4,                    /* Possessive NOT *, +, ?, upto           */ \
1602      2, 2, 2, 2, 2, 2,              /* NOT *I, *?I, +I, +?I, ?I, ??I          */ \
1603      4, 4, 4,                       /* NOT upto I, minupto I, exact I         */ \
1604      2, 2, 2, 4,                    /* Possessive NOT *I, +I, ?I, upto I      */ \
1605    /* Positive type repeats                                                 */ \    /* Positive type repeats                                                 */ \
1606    2, 2, 2, 2, 2, 2,              /* Type *, *?, +, +?, ?, ??               */ \    2, 2, 2, 2, 2, 2,              /* Type *, *?, +, +?, ?, ??               */ \
1607    4, 4, 4,                       /* Type upto, minupto, exact              */ \    4, 4, 4,                       /* Type upto, minupto, exact              */ \
# Line 832  in UTF-8 mode. The code that uses this t Line 1613  in UTF-8 mode. The code that uses this t
1613   33,                             /* NCLASS                                 */ \   33,                             /* NCLASS                                 */ \
1614    0,                             /* XCLASS - variable length               */ \    0,                             /* XCLASS - variable length               */ \
1615    3,                             /* REF                                    */ \    3,                             /* REF                                    */ \
1616      3,                             /* REFI                                   */ \
1617    1+LINK_SIZE,                   /* RECURSE                                */ \    1+LINK_SIZE,                   /* RECURSE                                */ \
1618    2+2*LINK_SIZE,                 /* CALLOUT                                */ \    2+2*LINK_SIZE,                 /* CALLOUT                                */ \
1619    1+LINK_SIZE,                   /* Alt                                    */ \    1+LINK_SIZE,                   /* Alt                                    */ \
1620    1+LINK_SIZE,                   /* Ket                                    */ \    1+LINK_SIZE,                   /* Ket                                    */ \
1621    1+LINK_SIZE,                   /* KetRmax                                */ \    1+LINK_SIZE,                   /* KetRmax                                */ \
1622    1+LINK_SIZE,                   /* KetRmin                                */ \    1+LINK_SIZE,                   /* KetRmin                                */ \
1623      1+LINK_SIZE,                   /* KetRpos                                */ \
1624      1+LINK_SIZE,                   /* Reverse                                */ \
1625    1+LINK_SIZE,                   /* Assert                                 */ \    1+LINK_SIZE,                   /* Assert                                 */ \
1626    1+LINK_SIZE,                   /* Assert not                             */ \    1+LINK_SIZE,                   /* Assert not                             */ \
1627    1+LINK_SIZE,                   /* Assert behind                          */ \    1+LINK_SIZE,                   /* Assert behind                          */ \
1628    1+LINK_SIZE,                   /* Assert behind not                      */ \    1+LINK_SIZE,                   /* Assert behind not                      */ \
   1+LINK_SIZE,                   /* Reverse                                */ \  
1629    1+LINK_SIZE,                   /* ONCE                                   */ \    1+LINK_SIZE,                   /* ONCE                                   */ \
1630    1+LINK_SIZE,                   /* BRA                                    */ \    1+LINK_SIZE,                   /* BRA                                    */ \
1631      1+LINK_SIZE,                   /* BRAPOS                                 */ \
1632    3+LINK_SIZE,                   /* CBRA                                   */ \    3+LINK_SIZE,                   /* CBRA                                   */ \
1633      3+LINK_SIZE,                   /* CBRAPOS                                */ \
1634    1+LINK_SIZE,                   /* COND                                   */ \    1+LINK_SIZE,                   /* COND                                   */ \
1635    1+LINK_SIZE,                   /* SBRA                                   */ \    1+LINK_SIZE,                   /* SBRA                                   */ \
1636      1+LINK_SIZE,                   /* SBRAPOS                                */ \
1637    3+LINK_SIZE,                   /* SCBRA                                  */ \    3+LINK_SIZE,                   /* SCBRA                                  */ \
1638      3+LINK_SIZE,                   /* SCBRAPOS                               */ \
1639    1+LINK_SIZE,                   /* SCOND                                  */ \    1+LINK_SIZE,                   /* SCOND                                  */ \
1640    3,                             /* CREF                                   */ \    3, 3,                          /* CREF, NCREF                            */ \
1641    3,                             /* RREF                                   */ \    3, 3,                          /* RREF, NRREF                            */ \
1642    1,                             /* DEF                                    */ \    1,                             /* DEF                                    */ \
1643    1, 1,                          /* BRAZERO, BRAMINZERO                    */ \    1, 1, 1,                       /* BRAZERO, BRAMINZERO, BRAPOSZERO        */ \
1644    1, 1, 1, 1,                    /* PRUNE, SKIP, THEN, COMMIT,             */ \    3, 1, 3,                       /* MARK, PRUNE, PRUNE_ARG                 */ \
1645    1, 1                           /* FAIL, ACCEPT                           */    1, 3,                          /* SKIP, SKIP_ARG                         */ \
1646      1+LINK_SIZE, 3+LINK_SIZE,      /* THEN, THEN_ARG                         */ \
1647      1, 1, 1, 1,                    /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT    */ \
1648      3, 1                           /* CLOSE, SKIPZERO  */
1649    
1650  /* A magic value for OP_RREF to indicate the "any recursion" condition. */  /* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion"
1651    condition. */
1652    
1653  #define RREF_ANY  0xffff  #define RREF_ANY  0xffff
1654    
1655  /* Error code numbers. They are given names so that they can more easily be  /* Compile time error code numbers. They are given names so that they can more
1656  tracked. */  easily be tracked. When a new number is added, the table called eint in
1657    pcreposix.c must be updated. */
1658    
1659  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4,  ERR5,  ERR6,  ERR7,  ERR8,  ERR9,  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4,  ERR5,  ERR6,  ERR7,  ERR8,  ERR9,
1660         ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,         ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
# Line 871  enum { ERR0, ERR1, ERR2, ERR3, ERR4, Line 1662  enum { ERR0, ERR1, ERR2, ERR3, ERR4,
1662         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1663         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1664         ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,         ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1665         ERR60, ERR61 };         ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
1666           ERRCOUNT };
1667    
1668  /* The real format of the start of the pcre block; the index of names and the  /* The real format of the start of the pcre block; the index of names and the
1669  code vector run on as long as necessary after the end. We store an explicit  code vector run on as long as necessary after the end. We store an explicit
# Line 887  Because people can now save and re-use c Line 1679  Because people can now save and re-use c
1679  structure should be made at the end, and something earlier (e.g. a new  structure should be made at the end, and something earlier (e.g. a new
1680  flag in the options or one of the dummy fields) should indicate that the new  flag in the options or one of the dummy fields) should indicate that the new
1681  fields are present. Currently PCRE always sets the dummy fields to zero.  fields are present. Currently PCRE always sets the dummy fields to zero.
1682  NOTE NOTE NOTE:  NOTE NOTE NOTE
1683  */  */
1684    
1685  typedef struct real_pcre {  typedef struct real_pcre {
# Line 914  remark (see NOTE above) about extending Line 1706  remark (see NOTE above) about extending
1706    
1707  typedef struct pcre_study_data {  typedef struct pcre_study_data {
1708    pcre_uint32 size;               /* Total that was malloced */    pcre_uint32 size;               /* Total that was malloced */
1709    pcre_uint32 options;    pcre_uint32 flags;              /* Private flags */
1710    uschar start_bits[32];    uschar start_bits[32];          /* Starting char bits */
1711      pcre_uint32 minlength;          /* Minimum subject length */
1712  } pcre_study_data;  } pcre_study_data;
1713    
1714    /* Structure for building a chain of open capturing subpatterns during
1715    compiling, so that instructions to close them can be compiled when (*ACCEPT) is
1716    encountered. This is also used to identify subpatterns that contain recursive
1717    back references to themselves, so that they can be made atomic. */
1718    
1719    typedef struct open_capitem {
1720      struct open_capitem *next;    /* Chain link */
1721      pcre_uint16 number;           /* Capture number */
1722      pcre_uint16 flag;             /* Set TRUE if recursive back ref */
1723    } open_capitem;
1724    
1725  /* Structure for passing "static" information around between the functions  /* Structure for passing "static" information around between the functions
1726  doing the compiling, so that they are thread-safe. */  doing the compiling, so that they are thread-safe. */
1727    
# Line 930  typedef struct compile_data { Line 1734  typedef struct compile_data {
1734    const uschar *start_code;     /* The start of the compiled code */    const uschar *start_code;     /* The start of the compiled code */
1735    const uschar *start_pattern;  /* The start of the pattern */    const uschar *start_pattern;  /* The start of the pattern */
1736    const uschar *end_pattern;    /* The end of the pattern */    const uschar *end_pattern;    /* The end of the pattern */
1737      open_capitem *open_caps;      /* Chain of open capture items */
1738    uschar *hwm;                  /* High watermark of workspace */    uschar *hwm;                  /* High watermark of workspace */
1739    uschar *name_table;           /* The name/number table */    uschar *name_table;           /* The name/number table */
1740    int  names_found;             /* Number of entries so far */    int  names_found;             /* Number of entries so far */
1741    int  name_entry_size;         /* Size of each entry */    int  name_entry_size;         /* Size of each entry */
1742    int  bracount;                /* Count of capturing parens */    int  bracount;                /* Count of capturing parens as we compile */
1743      int  final_bracount;          /* Saved value after first pass */
1744    int  top_backref;             /* Maximum back reference */    int  top_backref;             /* Maximum back reference */
1745    unsigned int backref_map;     /* Bitmap of low back refs */    unsigned int backref_map;     /* Bitmap of low back refs */
1746      int  assert_depth;            /* Depth of nested assertions */
1747    int  external_options;        /* External (initial) options */    int  external_options;        /* External (initial) options */
1748    int  external_flags;          /* External flag bits to be set */    int  external_flags;          /* External flag bits to be set */
1749    int  req_varyopt;             /* "After variable item" flag for reqbyte */    int  req_varyopt;             /* "After variable item" flag for reqbyte */
1750    BOOL had_accept;              /* (*ACCEPT) encountered */    BOOL had_accept;              /* (*ACCEPT) encountered */
1751      BOOL check_lookbehind;        /* Lookbehinds need later checking */
1752    int  nltype;                  /* Newline type */    int  nltype;                  /* Newline type */
1753    int  nllen;                   /* Newline string length */    int  nllen;                   /* Newline string length */
1754    uschar nl[4];                 /* Newline string when fixed length */    uschar nl[4];                 /* Newline string when fixed length */
1755  } compile_data;  } compile_data;
1756    
1757  /* Structure for maintaining a chain of pointers to the currently incomplete  /* Structure for maintaining a chain of pointers to the currently incomplete
1758  branches, for testing for left recursion. */  branches, for testing for left recursion while compiling. */
1759    
1760  typedef struct branch_chain {  typedef struct branch_chain {
1761    struct branch_chain *outer;    struct branch_chain *outer;
1762    uschar *current;    uschar *current_branch;
1763  } branch_chain;  } branch_chain;
1764    
1765  /* Structure for items in a linked list that represents an explicit recursive  /* Structure for items in a linked list that represents an explicit recursive
1766  call within the pattern. */  call within the pattern; used by pcre_exec(). */
1767    
1768  typedef struct recursion_info {  typedef struct recursion_info {
1769    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
1770    int group_num;                /* Number of group that was called */    int group_num;                  /* Number of group that was called */
1771    const uschar *after_call;     /* "Return value": points after the call in the expr */    int *offset_save;               /* Pointer to start of saved offsets */
1772    USPTR save_start;             /* Old value of mstart */    int saved_max;                  /* Number of saved offsets */
1773    int *offset_save;             /* Pointer to start of saved offsets */    USPTR subject_position;         /* Position at start of recursion */
   int saved_max;                /* Number of saved offsets */  
1774  } recursion_info;  } recursion_info;
1775    
1776    /* A similar structure for pcre_dfa_exec(). */
1777    
1778    typedef struct dfa_recursion_info {
1779      struct dfa_recursion_info *prevrec;
1780      int group_num;
1781      USPTR subject_position;
1782    } dfa_recursion_info;
1783    
1784  /* Structure for building a chain of data for holding the values of the subject  /* Structure for building a chain of data for holding the values of the subject
1785  pointer at the start of each subpattern, so as to detect when an empty string  pointer at the start of each subpattern, so as to detect when an empty string
1786  has been matched by a subpattern - to break infinite loops. */  has been matched by a subpattern - to break infinite loops; used by
1787    pcre_exec(). */
1788    
1789  typedef struct eptrblock {  typedef struct eptrblock {
1790    struct eptrblock *epb_prev;    struct eptrblock *epb_prev;
# Line 988  typedef struct match_data { Line 1804  typedef struct match_data {
1804    int    offset_max;            /* The maximum usable for return data */    int    offset_max;            /* The maximum usable for return data */
1805    int    nltype;                /* Newline type */    int    nltype;                /* Newline type */
1806    int    nllen;                 /* Newline string length */    int    nllen;                 /* Newline string length */
1807      int    name_count;            /* Number of names in name table */
1808      int    name_entry_size;       /* Size of entry in names table */
1809      uschar *name_table;           /* Table of names */
1810    uschar nl[4];                 /* Newline string when fixed */    uschar nl[4];                 /* Newline string when fixed */
1811    const uschar *lcc;            /* Points to lower casing table */    const  uschar *lcc;           /* Points to lower casing table */
1812    const uschar *ctypes;         /* Points to table of type maps */    const  uschar *ctypes;        /* Points to table of type maps */
1813    BOOL   offset_overflow;       /* Set if too many extractions */    BOOL   offset_overflow;       /* Set if too many extractions */
1814    BOOL   notbol;                /* NOTBOL flag */    BOOL   notbol;                /* NOTBOL flag */
1815    BOOL   noteol;                /* NOTEOL flag */    BOOL   noteol;                /* NOTEOL flag */
1816    BOOL   utf8;                  /* UTF8 flag */    BOOL   utf8;                  /* UTF8 flag */
1817      BOOL   jscript_compat;        /* JAVASCRIPT_COMPAT flag */
1818      BOOL   use_ucp;               /* PCRE_UCP flag */
1819    BOOL   endonly;               /* Dollar not before final \n */    BOOL   endonly;               /* Dollar not before final \n */
1820    BOOL   notempty;              /* Empty string match not wanted */    BOOL   notempty;              /* Empty string match not wanted */
1821    BOOL   partial;               /* PARTIAL flag */    BOOL   notempty_atstart;      /* Empty string match at start not wanted */
1822    BOOL   hitend;                /* Hit the end of the subject at some point */    BOOL   hitend;                /* Hit the end of the subject at some point */
1823    BOOL   bsr_anycrlf;           /* \R is just any CRLF, not full Unicode */    BOOL   bsr_anycrlf;           /* \R is just any CRLF, not full Unicode */
1824    const uschar *start_code;     /* For use when recursing */    BOOL   hasthen;               /* Pattern contains (*THEN) */
1825      const  uschar *start_code;    /* For use when recursing */
1826    USPTR  start_subject;         /* Start of the subject string */    USPTR  start_subject;         /* Start of the subject string */
1827    USPTR  end_subject;           /* End of the subject string */    USPTR  end_subject;           /* End of the subject string */
1828    USPTR  start_match_ptr;       /* Start of matched string */    USPTR  start_match_ptr;       /* Start of matched string */
1829    USPTR  end_match_ptr;         /* Subject position at end match */    USPTR  end_match_ptr;         /* Subject position at end match */
1830      USPTR  start_used_ptr;        /* Earliest consulted character */
1831      int    partial;               /* PARTIAL options */
1832    int    end_offset_top;        /* Highwater mark at end of match */    int    end_offset_top;        /* Highwater mark at end of match */
1833    int    capture_last;          /* Most recent capture number */    int    capture_last;          /* Most recent capture number */
1834    int    start_offset;          /* The start offset value */    int    start_offset;          /* The start offset value */
1835      int    match_function_type;   /* Set for certain special calls of MATCH() */
1836    eptrblock *eptrchain;         /* Chain of eptrblocks for tail recursions */    eptrblock *eptrchain;         /* Chain of eptrblocks for tail recursions */
1837    int    eptrn;                 /* Next free eptrblock */    int    eptrn;                 /* Next free eptrblock */
1838    recursion_info *recursive;    /* Linked list of recursion data */    recursion_info *recursive;    /* Linked list of recursion data */
1839    void  *callout_data;          /* To pass back to callouts */    void  *callout_data;          /* To pass back to callouts */
1840      const  uschar *mark;          /* Mark pointer to pass back */
1841      const  uschar *once_target;   /* Where to back up to for atomic groups */
1842  } match_data;  } match_data;
1843    
1844  /* A similar structure is used for the same purpose by the DFA matching  /* A similar structure is used for the same purpose by the DFA matching
1845  functions. */  functions. */
1846    
1847  typedef struct dfa_match_data {  typedef struct dfa_match_data {
1848    const uschar *start_code;     /* Start of the compiled pattern */    const uschar *start_code;      /* Start of the compiled pattern */
1849    const uschar *start_subject;  /* Start of the subject string */    const uschar *start_subject;   /* Start of the subject string */
1850    const uschar *end_subject;    /* End of subject string */    const uschar *end_subject;     /* End of subject string */
1851    const uschar *tables;         /* Character tables */    const uschar *start_used_ptr;  /* Earliest consulted character */
1852    int   moptions;               /* Match options */    const uschar *tables;          /* Character tables */
1853    int   poptions;               /* Pattern options */    int   start_offset;            /* The start offset value */
1854    int    nltype;                /* Newline type */    int   moptions;                /* Match options */
1855    int    nllen;                 /* Newline string length */    int   poptions;                /* Pattern options */
1856    uschar nl[4];                 /* Newline string when fixed */    int    nltype;                 /* Newline type */
1857    void  *callout_data;          /* To pass back to callouts */    int    nllen;                  /* Newline string length */
1858      uschar nl[4];                  /* Newline string when fixed */
1859      void  *callout_data;           /* To pass back to callouts */
1860      dfa_recursion_info *recursive; /* Linked list of recursion data */
1861  } dfa_match_data;  } dfa_match_data;
1862    
1863  /* Bit definitions for entries in the pcre_ctypes table. */  /* Bit definitions for entries in the pcre_ctypes table. */
# Line 1036  typedef struct dfa_match_data { Line 1866  typedef struct dfa_match_data {
1866  #define ctype_letter  0x02  #define ctype_letter  0x02
1867  #define ctype_digit   0x04  #define ctype_digit   0x04
1868  #define ctype_xdigit  0x08  #define ctype_xdigit  0x08
1869  #define ctype_word    0x10   /* alphameric or '_' */  #define ctype_word    0x10   /* alphanumeric or '_' */
1870  #define ctype_meta    0x80   /* regexp meta char or zero (end pattern) */  #define ctype_meta    0x80   /* regexp meta char or zero (end pattern) */
1871    
1872  /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set  /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
# Line 1065  total length. */ Line 1895  total length. */
1895    
1896  /* Layout of the UCP type table that translates property names into types and  /* Layout of the UCP type table that translates property names into types and
1897  codes. Each entry used to point directly to a name, but to reduce the number of  codes. Each entry used to point directly to a name, but to reduce the number of
1898  relocations in shared libraries, it now has an offset into a single string  relocations in shared libraries, it now has an offset into a single string
1899  instead. */  instead. */
1900    
1901  typedef struct {  typedef struct {
1902    pcre_uint16 name_offset;    pcre_uint16 name_offset;
1903    pcre_uint16 type;    pcre_uint16 type;
1904    pcre_uint16 value;    pcre_uint16 value;
1905  } ucp_type_table;  } ucp_type_table;
# Line 1085  extern const int _pcre_utf8_table2[]; Line 1915  extern const int _pcre_utf8_table2[];
1915  extern const int    _pcre_utf8_table3[];  extern const int    _pcre_utf8_table3[];
1916  extern const uschar _pcre_utf8_table4[];  extern const uschar _pcre_utf8_table4[];
1917    
1918    #ifdef SUPPORT_JIT
1919    extern const uschar _pcre_utf8_char_sizes[];
1920    #endif
1921    
1922  extern const int    _pcre_utf8_table1_size;  extern const int    _pcre_utf8_table1_size;
1923    
1924  extern const char   _pcre_utt_names[];  extern const char   _pcre_utt_names[];
# Line 1100  extern const uschar _pcre_OP_lengths[]; Line 1934  extern const uschar _pcre_OP_lengths[];
1934  one of the exported public functions. They have to be "external" in the C  one of the exported public functions. They have to be "external" in the C
1935  sense, but are not part of the PCRE public API. */  sense, but are not part of the PCRE public API. */
1936    
1937  extern BOOL         _pcre_is_newline(const uschar *, int, const uschar *,  extern const uschar *_pcre_find_bracket(const uschar *, BOOL, int);
1938                        int *, BOOL);  extern BOOL          _pcre_is_newline(USPTR, int, USPTR, int *, BOOL);
1939  extern int          _pcre_ord2utf8(int, uschar *);  extern int           _pcre_ord2utf8(int, uschar *);
1940  extern real_pcre   *_pcre_try_flipped(const real_pcre *, real_pcre *,  extern real_pcre    *_pcre_try_flipped(const real_pcre *, real_pcre *,
1941                        const pcre_study_data *, pcre_study_data *);                         const pcre_study_data *, pcre_study_data *);
1942  extern int          _pcre_ucp_findprop(const unsigned int, int *, int *);  extern int           _pcre_valid_utf8(USPTR, int, int *);
1943  extern unsigned int _pcre_ucp_othercase(const unsigned int);  extern BOOL          _pcre_was_newline(USPTR, int, USPTR, int *, BOOL);
1944  extern int          _pcre_valid_utf8(const uschar *, int);  extern BOOL          _pcre_xclass(int, const uschar *);
1945  extern BOOL         _pcre_was_newline(const uschar *, int, const uschar *,  
1946                        int *, BOOL);  #ifdef SUPPORT_JIT
1947  extern BOOL         _pcre_xclass(int, const uschar *);  extern void          _pcre_jit_compile(const real_pcre *, pcre_extra *);
1948    extern int           _pcre_jit_exec(const real_pcre *, void *, PCRE_SPTR,
1949                            int, int, int, int, int *, int);
1950    extern void          _pcre_jit_free(void *);
1951    #endif
1952    
1953    /* Unicode character database (UCD) */
1954    
1955    typedef struct {
1956      uschar script;
1957      uschar chartype;
1958      pcre_int32 other_case;
1959    } ucd_record;
1960    
1961    extern const ucd_record  _pcre_ucd_records[];
1962    extern const uschar      _pcre_ucd_stage1[];
1963    extern const pcre_uint16 _pcre_ucd_stage2[];
1964    extern const int         _pcre_ucp_gentype[];
1965    #ifdef SUPPORT_JIT
1966    extern const int         _pcre_ucp_typerange[];
1967    #endif
1968    
1969    /* UCD access macros */
1970    
1971    #define UCD_BLOCK_SIZE 128
1972    #define GET_UCD(ch) (_pcre_ucd_records + \
1973            _pcre_ucd_stage2[_pcre_ucd_stage1[(ch) / UCD_BLOCK_SIZE] * \
1974            UCD_BLOCK_SIZE + (ch) % UCD_BLOCK_SIZE])
1975    
1976    #define UCD_CHARTYPE(ch)  GET_UCD(ch)->chartype
1977    #define UCD_SCRIPT(ch)    GET_UCD(ch)->script
1978    #define UCD_CATEGORY(ch)  _pcre_ucp_gentype[UCD_CHARTYPE(ch)]
1979    #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case)
1980    
1981  #endif  #endif
1982    

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